NamespaceCollection Class

Definition

Contains a collection of namespace objects. This class cannot be inherited.

public ref class NamespaceCollection sealed : System::Configuration::ConfigurationElementCollection
[System.Configuration.ConfigurationCollection(typeof(System.Web.Configuration.NamespaceInfo))]
public sealed class NamespaceCollection : System.Configuration.ConfigurationElementCollection
[<System.Configuration.ConfigurationCollection(typeof(System.Web.Configuration.NamespaceInfo))>]
type NamespaceCollection = class
    inherit ConfigurationElementCollection
Public NotInheritable Class NamespaceCollection
Inherits ConfigurationElementCollection
Inheritance
Attributes

Examples

The following configuration file excerpt shows how to declaratively specify values for several properties of the NamespaceCollection class.

<system.web>  
  <pages>  
    <namespaces>  
      <add namespace="System" />  
      <add namespace="System.Collections" />  
      <add namespace="System.Collections.Specialized" />  
      <add namespace="System.ComponentModel" />  
      <add namespace="System.Configuration" />  
      <add namespace="System.Web" />  
    </namespaces>  
  </pages>  
</system.web>  

The following code example shows how to use the NamespaceCollection type. This code example is part of a larger example provided for the PagesSection class.

       // Get the AutoImportVBNamespace property.
       Console.WriteLine("AutoImportVBNamespace: '{0}'",
           pagesSection.Namespaces.AutoImportVBNamespace.ToString());

       // Set the AutoImportVBNamespace property.
       pagesSection.Namespaces.AutoImportVBNamespace = true;

       // Get all current Namespaces in the collection.
       for (int i = 0; i < pagesSection.Namespaces.Count; i++)
       {
         Console.WriteLine(
             "Namespaces {0}: '{1}'", i,
             pagesSection.Namespaces[i].Namespace);
       }

       // Create a new NamespaceInfo object.
       System.Web.Configuration.NamespaceInfo namespaceInfo =
           new System.Web.Configuration.NamespaceInfo("System");

       // Set the Namespace property.
       namespaceInfo.Namespace = "System.Collections";

       // Execute the Add Method.
       pagesSection.Namespaces.Add(namespaceInfo);

       // Add a NamespaceInfo object using a constructor.
       pagesSection.Namespaces.Add(
           new System.Web.Configuration.NamespaceInfo(
           "System.Collections.Specialized"));

       // Execute the RemoveAt method.
       pagesSection.Namespaces.RemoveAt(0);

       // Execute the Clear method.
       pagesSection.Namespaces.Clear();

       // Execute the Remove method.
       pagesSection.Namespaces.Remove("System.Collections");

       // Get the current AutoImportVBNamespace property value.
       Console.WriteLine(
           "Current AutoImportVBNamespace value: '{0}'",
           pagesSection.Namespaces.AutoImportVBNamespace);

       // Set the AutoImportVBNamespace property to false.
       pagesSection.Namespaces.AutoImportVBNamespace = false;
' Get the AutoImportVBNamespace property.
Console.WriteLine( _
 "AutoImportVBNamespace: '{0}'", _
 pagesSection.Namespaces.AutoImportVBNamespace)

' Set the AutoImportVBNamespace property.
pagesSection.Namespaces.AutoImportVBNamespace = True

' Get all current Namespaces in the collection.
Dim i As Int16
For i = 0 To pagesSection.Namespaces.Count - 1
  Console.WriteLine( _
   "Namespaces {0}: '{1}'", i, _
   pagesSection.Namespaces(i).Namespace)
Next

' Create a new NamespaceInfo object.
Dim namespaceInfo As System.Web.Configuration.NamespaceInfo = _
 New System.Web.Configuration.NamespaceInfo("System")

' Set the Namespace property.
namespaceInfo.Namespace = "System.Collections"

' Execute the Add Method.
pagesSection.Namespaces.Add(namespaceInfo)

' Add a NamespaceInfo object using a constructor.
pagesSection.Namespaces.Add( _
 New System.Web.Configuration.NamespaceInfo( _
 "System.Collections.Specialized"))

' Execute the RemoveAt method.
pagesSection.Namespaces.RemoveAt(0)

' Execute the Clear method.
pagesSection.Namespaces.Clear()

' Execute the Remove method.
pagesSection.Namespaces.Remove("System.Collections")

' Get the current AutoImportVBNamespace property value.
Console.WriteLine( _
 "Current AutoImportVBNamespace value: '{0}'", _
 pagesSection.Namespaces.AutoImportVBNamespace)

' Set the AutoImportVBNamespace property to false.
pagesSection.Namespaces.AutoImportVBNamespace = False

Remarks

The NamespaceCollection contains NamespaceInfo objects. Each NamespaceInfo object is the same as an Import (<%@ Import %>) directive that applies to all pages and controls in the scope of the configuration file. The Import directive allows you to import a namespace into your ASP.NET page, making all its classes available for use on your page.

Constructors

NamespaceCollection()

Initializes a new instance of the NamespaceCollection class.

Properties

AddElementName

Gets or sets the name of the ConfigurationElement to associate with the add operation in the ConfigurationElementCollection when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
AutoImportVBNamespace

Gets or sets a value that determines whether the Visual Basic namespace is imported without having to specify it.

ClearElementName

Gets or sets the name for the ConfigurationElement to associate with the clear operation in the ConfigurationElementCollection when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
CollectionType

Gets the type of the ConfigurationElementCollection.

(Inherited from ConfigurationElementCollection)
Count

Gets the number of elements in the collection.

(Inherited from ConfigurationElementCollection)
CurrentConfiguration

Gets a reference to the top-level Configuration instance that represents the configuration hierarchy that the current ConfigurationElement instance belongs to.

(Inherited from ConfigurationElement)
ElementInformation

Gets an ElementInformation object that contains the non-customizable information and functionality of the ConfigurationElement object.

(Inherited from ConfigurationElement)
ElementName

Gets the name used to identify this collection of elements in the configuration file when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
ElementProperty

Gets the ConfigurationElementProperty object that represents the ConfigurationElement object itself.

(Inherited from ConfigurationElement)
EmitClear

Gets or sets a value that specifies whether the collection has been cleared.

(Inherited from ConfigurationElementCollection)
EvaluationContext

Gets the ContextInformation object for the ConfigurationElement object.

(Inherited from ConfigurationElement)
HasContext

Gets a value that indicates whether the CurrentConfiguration property is null.

(Inherited from ConfigurationElement)
IsSynchronized

Gets a value indicating whether access to the collection is synchronized.

(Inherited from ConfigurationElementCollection)
Item[ConfigurationProperty]

Gets or sets a property or attribute of this configuration element.

(Inherited from ConfigurationElement)
Item[Int32]

Gets or sets the NamespaceInfo object at the specified index in the collection.

Item[String]

Gets or sets a property, attribute, or child element of this configuration element.

(Inherited from ConfigurationElement)
LockAllAttributesExcept

Gets the collection of locked attributes.

(Inherited from ConfigurationElement)
LockAllElementsExcept

Gets the collection of locked elements.

(Inherited from ConfigurationElement)
LockAttributes

Gets the collection of locked attributes.

(Inherited from ConfigurationElement)
LockElements

Gets the collection of locked elements.

(Inherited from ConfigurationElement)
LockItem

Gets or sets a value indicating whether the element is locked.

(Inherited from ConfigurationElement)
Properties

Gets the collection of properties.

(Inherited from ConfigurationElement)
RemoveElementName

Gets or sets the name of the ConfigurationElement to associate with the remove operation in the ConfigurationElementCollection when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
SyncRoot

Gets an object used to synchronize access to the ConfigurationElementCollection.

(Inherited from ConfigurationElementCollection)
ThrowOnDuplicate

Gets a value indicating whether an attempt to add a duplicate ConfigurationElement to the ConfigurationElementCollection will cause an exception to be thrown.

(Inherited from ConfigurationElementCollection)

Methods

Add(NamespaceInfo)

Adds a NamespaceInfo object to the collection.

BaseAdd(ConfigurationElement)

Adds a configuration element to the ConfigurationElementCollection.

(Inherited from ConfigurationElementCollection)
BaseAdd(ConfigurationElement, Boolean)

Adds a configuration element to the configuration element collection.

(Inherited from ConfigurationElementCollection)
BaseAdd(Int32, ConfigurationElement)

Adds a configuration element to the configuration element collection.

(Inherited from ConfigurationElementCollection)
BaseClear()

Removes all configuration element objects from the collection.

(Inherited from ConfigurationElementCollection)
BaseGet(Int32)

Gets the configuration element at the specified index location.

(Inherited from ConfigurationElementCollection)
BaseGet(Object)

Returns the configuration element with the specified key.

(Inherited from ConfigurationElementCollection)
BaseGetAllKeys()

Returns an array of the keys for all of the configuration elements contained in the ConfigurationElementCollection.

(Inherited from ConfigurationElementCollection)
BaseGetKey(Int32)

Gets the key for the ConfigurationElement at the specified index location.

(Inherited from ConfigurationElementCollection)
BaseIndexOf(ConfigurationElement)

Indicates the index of the specified ConfigurationElement.

(Inherited from ConfigurationElementCollection)
BaseIsRemoved(Object)

Indicates whether the ConfigurationElement with the specified key has been removed from the ConfigurationElementCollection.

(Inherited from ConfigurationElementCollection)
BaseRemove(Object)

Removes a ConfigurationElement from the collection.

(Inherited from ConfigurationElementCollection)
BaseRemoveAt(Int32)

Removes the ConfigurationElement at the specified index location.

(Inherited from ConfigurationElementCollection)
Clear()

Removes all NamespaceInfo objects from the collection.

CopyTo(ConfigurationElement[], Int32)

Copies the contents of the ConfigurationElementCollection to an array.

(Inherited from ConfigurationElementCollection)
CreateNewElement()

When overridden in a derived class, creates a new ConfigurationElement.

(Inherited from ConfigurationElementCollection)
CreateNewElement(String)

Creates a new ConfigurationElement when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
DeserializeElement(XmlReader, Boolean)

Reads XML from the configuration file.

(Inherited from ConfigurationElement)
Equals(Object)

Compares the ConfigurationElementCollection to the specified object.

(Inherited from ConfigurationElementCollection)
GetElementKey(ConfigurationElement)

Gets the element key for a specified configuration element when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
GetEnumerator()

Gets an IEnumerator which is used to iterate through the ConfigurationElementCollection.

(Inherited from ConfigurationElementCollection)
GetHashCode()

Gets a unique value representing the ConfigurationElementCollection instance.

(Inherited from ConfigurationElementCollection)
GetTransformedAssemblyString(String)

Returns the transformed version of the specified assembly name.

(Inherited from ConfigurationElement)
GetTransformedTypeString(String)

Returns the transformed version of the specified type name.

(Inherited from ConfigurationElement)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
Init()

Sets the ConfigurationElement object to its initial state.

(Inherited from ConfigurationElement)
InitializeDefault()

Used to initialize a default set of values for the ConfigurationElement object.

(Inherited from ConfigurationElement)
IsElementName(String)

Indicates whether the specified ConfigurationElement exists in the ConfigurationElementCollection.

(Inherited from ConfigurationElementCollection)
IsElementRemovable(ConfigurationElement)

Indicates whether the specified ConfigurationElement can be removed from the ConfigurationElementCollection.

(Inherited from ConfigurationElementCollection)
IsModified()

Indicates whether this ConfigurationElementCollection has been modified since it was last saved or loaded when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
IsReadOnly()

Indicates whether the ConfigurationElementCollection object is read only.

(Inherited from ConfigurationElementCollection)
ListErrors(IList)

Adds the invalid-property errors in this ConfigurationElement object, and in all subelements, to the passed list.

(Inherited from ConfigurationElement)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
OnDeserializeUnrecognizedAttribute(String, String)

Gets a value indicating whether an unknown attribute is encountered during deserialization.

(Inherited from ConfigurationElement)
OnDeserializeUnrecognizedElement(String, XmlReader)

Causes the configuration system to throw an exception.

(Inherited from ConfigurationElementCollection)
OnRequiredPropertyNotFound(String)

Throws an exception when a required property is not found.

(Inherited from ConfigurationElement)
PostDeserialize()

Called after deserialization.

(Inherited from ConfigurationElement)
PreSerialize(XmlWriter)

Called before serialization.

(Inherited from ConfigurationElement)
Remove(String)

Removes the NamespaceInfo object with the specified key from the collection.

RemoveAt(Int32)

Removes a ProfileGroupSettings object from the specified index in the collection.

Reset(ConfigurationElement)

Resets the ConfigurationElementCollection to its unmodified state when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
ResetModified()

Resets the value of the IsModified() property to false when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
SerializeElement(XmlWriter, Boolean)

Writes the configuration data to an XML element in the configuration file when overridden in a derived class.

(Inherited from ConfigurationElementCollection)
SerializeToXmlElement(XmlWriter, String)

Writes the outer tags of this configuration element to the configuration file when implemented in a derived class.

(Inherited from ConfigurationElement)
SetPropertyValue(ConfigurationProperty, Object, Boolean)

Sets a property to the specified value.

(Inherited from ConfigurationElement)
SetReadOnly()

Sets the IsReadOnly() property for the ConfigurationElementCollection object and for all sub-elements.

(Inherited from ConfigurationElementCollection)
ToString()

Returns a string that represents the current object.

(Inherited from Object)
Unmerge(ConfigurationElement, ConfigurationElement, ConfigurationSaveMode)

Reverses the effect of merging configuration information from different levels of the configuration hierarchy.

(Inherited from ConfigurationElementCollection)

Explicit Interface Implementations

ICollection.CopyTo(Array, Int32)

Copies the ConfigurationElementCollection to an array.

(Inherited from ConfigurationElementCollection)

Extension Methods

Cast<TResult>(IEnumerable)

Casts the elements of an IEnumerable to the specified type.

OfType<TResult>(IEnumerable)

Filters the elements of an IEnumerable based on a specified type.

AsParallel(IEnumerable)

Enables parallelization of a query.

AsQueryable(IEnumerable)

Converts an IEnumerable to an IQueryable.

Applies to

See also